Optimizing design of high-resolution optical encoder using a point-source light-emitting diode with slits

Yuji Matsuzoe; Kazuhiro Koizumi; Tetsuya Saitoh; Toru Yoshizawa

doi:10.1117/1.1829093

1 January 2005 Optimizing design of high-resolution optical encoder using a point-source light-emitting diode with slits

Yuji Matsuzoe, Kazuhiro Koizumi, Tetsuya Saitoh, Toru Yoshizawa

Author Affiliations +

Optical Engineering, Vol. 44, Issue 1, 013609 (January 2005). https://doi.org/10.1117/1.1829093

Abstract

We discuss an interference fringe type encoder using a point source LED equipped with a slit; this encoder offers high resolution, a wide temperature range, and high reliability. To optimize the design of this encoder, we develop a simulator for an interference-fringe-type encoder using the Fresnel-Kirchhoff diffraction formula, and we analyze the following elements of the optical system of the encoder: (1) the effect of the LED wavelength band, (2) the effect of the size of the LED radiation area, and (3) the effect of the shape of the diffraction grating surface. The interference fringes of this encoder are generated with 60% greater efficiency than an encoder using an LD featuring a very narrow slit width.

©(2005) Society of Photo-Optical Instrumentation Engineers (SPIE)

Citation Download Citation

Yuji Matsuzoe, Kazuhiro Koizumi, Tetsuya Saitoh, and Toru Yoshizawa "Optimizing design of high-resolution optical encoder using a point-source light-emitting diode with slits," Optical Engineering 44(1), 013609 (1 January 2005). https://doi.org/10.1117/1.1829093

Published: 1 January 2005

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

;

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE